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15ct Kyanite (Princess, 13.32×13.32mm, Blue) vs 15ct Sapphire (Princess, 12.95×12.95mm, Blue)


Quick summary: When looked from above (face-up position), 15ct Kyanite (13.32×13.32mm, princess cut) appears 6% larger than 15ct Sapphire (12.95×12.95mm, princess cut). See below how they compare side-by-side on a ring and finger.

15ct Kyanite (princess cut)
vs
 15ct Sapphire (princess cut)
blue
 
blue
13.32×13.32 mm 12.95×12.95 mm
actual size
Actual size of 15ct Kyanite (princess cut, 13.32×13.32mm, Blue color)   Actual size of 15ct Sapphire (princess cut, 12.95×12.95mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 15ct Kyanite (princess cut, 13.32×13.32mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 15ct Sapphire (princess cut, 12.95×12.95mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 79% vs 77%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Kyanite Princess (13.32×13.32mm, Blue) and 15ct Sapphire Princess (12.95×12.95mm, Blue) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Sapphire will face-up smaller than Kyanite for a given carat weight, because it has higher specific gravity (4 vs. 3.68 - this means it's "heavier" compared to Kyanite of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


15 Ct Kyanite (Princess) 15 Ct Sapphire (Princess)
13.32×13.32 mm vs 12.95×12.95 mm
177.42 mm²   167.7 mm²
Face-up size outline for 15ct Kyanite (13.32×13.32mm, princess cut)
Face-up size outline for 15ct Sapphire (12.95×12.95mm, princess cut)
15ct Kyanite Princess (13.32×13.32mm)
15ct Sapphire Princess (12.95×12.95mm)
Difference: 6% (9.72 mm²)
15ct Kyanite (Princess, 13.32×13.32mm) has approx. 6% more face-up area than 15ct Sapphire (Princess, 12.95×12.95mm).


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